Microchemistry of proton-irradiated austenitic alloys under conditions relevant to LWR core components
Creators
- 1. Univ. of Michigan, Ann Arbor, MI (United States). Nuclear Engineering and Radiological Sciences Dept.
- 2. Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.
Description
Over 1,200 measurements of grain boundary composition and microstructure have been made on 14 different austenitic Fe-Cr-Ni alloys following proton irradiation in the temperature range 200--600 C and in the dose range 0.1--3.0 dpa. Grain boundary composition measurements revealed that Cr depletes at grain boundaries, Ni enriches and Fe can either enrich or deplete depending on alloy composition. Analysis of temperature and composition dependence of RIS revealed that the magnitude and direction of grain boundary segregation depends on alloy composition because the value of migration enthalpy differs among the alloy constituents, and diffusivities of the alloy constituents are composition-dependent. The dose dependence of segregation revealed ordering in Ni-base alloys and temperature dependence was used to show that RIS occurs by vacancy exchange rather than an interstitial binding mechanism. The dependence of segregation on composition is consistent with all known, relevant neutron data
Additional details
Publishing Information
- Publisher
- Materials Research Society
- Imprint Place
- Warrendale, PA (United States)
- ISBN
- 1-55899-446-7
- Imprint Title
- Microstructural processes in irradiated materials
- Imprint Pagination
- 754 p.
- Series
- Materials Research Society symposium proceedings, Volume 540
- Journal Page Range
- p. 421-432
- ISSN
- 0272-9172
Conference
- Title
- 1998 Fall Meeting of the Materials Research Society
- Dates
- 30 Nov - 4 Dec 1998
- Place
- Boston, MA (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30052097
- Subject category
- S36: MATERIALS SCIENCE; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- CHROMIUM ALLOYS; CHROMIUM-NICKEL STEELS; EXPERIMENTAL DATA; MICROSTRUCTURE; NICKEL BASE ALLOYS; PHYSICAL RADIATION EFFECTS; REACTOR MATERIALS; SEGREGATION; TEMPERATURE DEPENDENCE; WATER COOLED REACTORS
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; CHROMIUM ALLOYS; DATA; HIGH ALLOY STEELS; INFORMATION; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; NICKEL ALLOYS; NUMERICAL DATA; RADIATION EFFECTS; REACTORS; STAINLESS STEELS; STEELS; TRANSITION ELEMENT ALLOYS
Optional Information
- Contract/Grant/Project number
- Contract FG02-93ER12130; AC05-96OR22464; AC05-76OR00033
- Funding organization
- USDOE, Washington, DC (United States); Pacific Northwest Lab., Richland, WA (United States)
- Secondary number(s)
- CONF-981104--